Fixes Poetry setup in Dev Container

* Adds Poetry to PATH variable
* Checks if Poetry was installed successfully
* Gives executable permission to `setup.sh` before executing it

.devcontainer/devcontainer.json

@@ -41,5 +41,5 @@
 	},
 
 	// Setup Poetry and install dependencies
-	"postStartCommand": "bash ./.devcontainer/setup.sh"
+	"postStartCommand": "chmod +x ./.devcontainer/setup.sh && bash ./.devcontainer/setup.sh"
 }

.devcontainer/setup.sh

@@ -3,8 +3,14 @@
 # Install Poetry
 curl -sSL https://install.python-poetry.org | python - -y
 
-# Update Poetry configuration
-poetry config virtualenv.create false
+# Add Poetry to PATH (important in container environments)
+export PATH="/home/vscode/.local/bin:$PATH"
+
+# Check if Poetry was installed
+if ! poetry --version; then
+    echo "Poetry installation failed"
+    exit 1
+fi
 
 # Install dependencies
-poetry install --no-root
+poetry install